The other review of this movie got the plot wrong. Thelma Ritter is the MOTHER-IN-LAW of Gene Tierney, not her MOTHER. Ms. Ritter's son in the film, played by John Lund is the pretentious one. When his mother arrives to attend his wedding to the gently brought up Ms. Tierney, who is actually a sweetheart and a lady in the best sense of the word, he hands Thelma some cash to get a makeover, noting that she should especially purchase GLOVES, to hide her hands that have worked hard at a hamburger stand to put him through a fancy college. This guy is a real stinker!! Thelma ends up not going to the ceremony, fearful she will embarrass her jerk of a son. She then gets some jobs to buy a fantastic outfit so she can drop in on the newlyweds. When Ms. Ritter gets there, Gene Tierney thinks she is the cook she wanted, and latches on to her because Ms. Tierney is having her first dinner party, and she is in a state of panic and disaster. The plot revolves around the fact that Thelma stays on to help out, and swears her son to secrecy about who she is. There are absolutely SOLID GOLD performances by Miriam Hopkins, as Gene's snooty mother, and Larry Keating, as John Lund's down-to-earth boss. The best part of this movie is when Gene discovers the masquerade and tells her insensitive husband off, defending his mother as a wonderful, honorable woman. DO NOT MISS THIS MOVIE !!